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Finding the Fourth Proportional to 752.69, 1,127.73 and 676.61

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Solution

The fourth proportional to 752.69, 1,127.73 and 676.61 is: 1,013.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.69 : 1,127.73 = 676.61 : x
  2. Step 2: Convert to fraction form
    752.69/1,127.73 = 676.61/x
  3. Step 3: Cross multiply
    752.69x = 1,127.73 × 676.61
  4. Step 4: Simplify right side
    752.69x = 763,027.76
  5. Step 5: Solve for x
    x = 763,027.76/752.69
  6. Step 6: Final answer
    x = 1,013.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.